Machine for operating on heels



v J. H. POPE;

MACHINE FOR OPERAHNG 0N HEELS.

APPLlCATiON FILED NOV. 14, 1916, 1,3%6,2A7. Patented July 13, 1920,

4 SHEETS-SHEET i.

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J. H. POPE.

MACHINE FOR OPERATING 0N HEELS.

APPLICATION FILED NOV. 14, 1916.

1,346,247. Patented July 13, 1920..

4 SHEETS-SHEET 2- Fig.2. zg 150 J. H. POPE.

MACHINE FOR OPERATING 0N HEII-ILS.

APPLICATION FILED NOV. 14, I916.

Patented July 13, 1920.

4 SHEETSSHEET 3.

yz l0 .l. H. POPE.

MACHINE FOR OPERATING 0N HEELS.

APPLICATION FILED NOV. 14. I916.

Patented July 13, 1920.

4 SHEETS-SHEET 4.

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tslldl'lliil) ETATES PATENT OFFHQE.

JOSEPH I-I. POPE, OF HAMILTON, MASSACHUSETTS, ASSIGNOR, BY MESNE RSSIGN- MENTS, TO UNITED SHOE MACHINERY CORK- 0355. 'IION, G1 PATE'REDN, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MACHINE FOR OPERATING ON HEELS.

Application filed November 14., 1916.

To all whom it may concern Be it known that I, Josnrrr H. Porn, a citizen of the United States, residing at Hamilton, in the county of Essex and State of Massachusetts, have invented certain Improvements in Machines for Operating on Heels, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

Thi s invention relates to machines for operating on heels and is herein shown as embodied in a machine for attaching heels and top lifts to boots and shoes, although certain of its features may be employed ads vantageously in machines for pricking or loading or performing other operations upon heels.

In machines of this class it is customary to subject the work to a considerable pressure during the operation of the tools and heretofore the machine frame has been constructed sufficiently heavy and thick to withstand the tension developed in the frame during this portion of the cycle. A featiiire of the present invention consists in an improved frame having its thrust re ceiving parts connected by tension members which will relieve the frame of tension strains and permit its weight to be substantially reduced. its herein shown tubular tension members are employed and these are advantageously utilized to incase the recipromitory rods which form a part of the nail- .ing mechanism, and for other functions which will he hereinafter pointed out.

Another featin'e of the invention consists in a die plate having two die blocks which may be moved alternately from a convenient position for loading at one side of the machine into operative position in line with the driver gang. Advantages of this arrangement are numerous. For example, it enables the operator to confine his attention to operations on the shoe and heel while the assistant supplies the nails, heels and top lifts to that die block which is in mop erative position. It also eliminates the necessity of separate loaders, thus permitting the ends of the drivers to he brought close to the surface of the die plate and the stroke of the machine correspondingly shortened.

.iilnother feature of the invention consists Specification of Letters Patent.

Patented July ioao;

Serial No. 131,332.

in novel blank holders so constructed and arranged as to present automatically and accurately position the heel and top lift blanks. The combination of such holders with a movable die plate is believed to be broadly new, as well as certain characteristic features of construction of the holders which will. be pointed out hereafter.

Another feature of the invention consists in novel mechanism of simplified and improved. form for relatively moving the jack and die plate in applying pressure to the work preliminarily to the operation of the tool As herein shown one pair of cams is utilized to apply both the measuring pressure and the further pressure to tire work, one cam being operated in the first operation and the other cam in the second operation.

The present invention also includes among its features novel shoe positioning devices and novel mechanism for controlling the starting of the machine and the measuring operation.

These and other features of the inven tion will be best understood and appreciated f om the following description of a preferred embodiment thereof selected for purposes of illustration and shown in the accompanying drawings, in which- Figure 1 is a view of the machine in side elevation;

Fig. 2 is a view of the machine in front elevation;

Fig. 3 is a plan view of the die plate mechanism F 1g. 4: 1s a correspondlng view in front elevation;

Figs. 5 to 8 are detail views of the breast gage mechanism of the heel and toplift holders;

Fig. 9 is a view in perspective on an enlarged scale of the die plate mechanism shown in Figs. 3 and 1-;

Fig. 10 is a plan view of the shoe clamping mechanism;

Fig. 11 is a view in perspective of part of the mechanism shown in Fig. 10, and

Fig. 12 is a plan view of the heel and toplift slide plate.

The machine frame is made in two parts of which the lower part 12 is provided with hearings for the main shaft 16 carrying a loose pulley 1S and a fast pulley 20. The

. upper part of the frame 14 is flanged at its lower end and permanently bolted to the bottom part 12. The upper part of the frame 14 is provided with a pair of heavy bosses 15 each bored to permit the passage of a tube 38. The tubes extend through the bottom face of the part 14 where they are threaded and provided with large nuts 40. At its upper end the-left hand tube 38 is threaded in a hub 44 which constitutes a part of the die plate section 42. The right hand. tube 38 is threaded into a bearing member 56, as shown in'Fig 4 the purpose of which will be presently described. The tubes 38 are preferably formed of steel of high tensile. strength and when assembled. in

the frame part '14 einforcethelatter and provide a composite structure havingmaximum strength: and stiffness fora minimum of weight. The tubes 38 moreover have also the important function of affording casings for the side rods 24 which actuate thenail driving mechanism. Bearings are formed for the side rods in'bushings located adja cent to the ends of the tubes 38.

'Atits forward end the main shaft 16 is provided with a crank 22 which is connected to a lower cross head 26. .A pair of side rods 24 extend upwardlyfromthe crosshead 26 through the tubes 38, being connected at theirupper 'ends with theupper crosshead 28. The cross head 28is provided with a central bore inwhich is mounted a" threaded plunger 30provided at its lower end with a head 34 having guideways for the receptionof'thefldriver block 36 carrying the driver gang; The cross head 28 has an intermediate opening in which is located an adjusting wheel 32 threaded upon the driver plunger 30. By turning the adjusting wheel 32 the vertical position of the drivers and their path of movement may be controlled.

The die plate is made in two sections of which the left hand section 42 is stationary while the right hand section 46 is mounted to revolve about the axis of the right hand side rod upon the stationary bearing member 50. To this end the scction 46 of the die plate is provided with a downwardly extending hub 48 which rests at its lower end upon ball bearings 49 supported -upon an annular shoulder formed in the bearing piece 50,'as shown in Fig. 4. At its upper end: thebearing piece 50 is threaded to receive-a circular nut 47 which, when screwed up to ashoulder on the bearing piece, permits the required movement of the die plate and at the same time holds it'firmly against upward movement. The section 46'hassccured to its ends the nail blocks 52 and 53 eachof which has a curved outwardly projecting flangearranged to fit into a corresponding groove in the die section 42 when thenail block is in operative position. The inner edge of each nail block has a tongue and groove connection with the section 46 and is detachably held in place by a screw 55' threaded into the section 46 and arranged to enter a taperedhole in'the tongue of the nail block,--as shown in-Fig. 4. When'it is desired to fit themac-hinefor different style of nailing the appropriate nail blocks may be easily substituted in the die section 46 by removingthe screws 55.

A heel and toplift holder is arranged beneath each side of the die section 46 being movable longitudinally of the die section to present first the heel and then the toplift beneath the nail block. A flangedguide bracket 60is bolted to each side of the die section 46, being provided at itslowerside *ith a dovetailed guideway fora-slide 62. Each slide carries a heel holder and a toplift holder as shown in Figs. 3 and 12. The heel iolder comprises a forked reargage 64 ranged for adjustingvmovement longitudinally of the heel and providedforthis purpose with teeth which mesh with a worm upon an adjusting screw 66. The toplift holder comprises a similar 'rear gage 68 mounted for parallel movement in the slide 62 and provided with an adjusting screw 70. The breast gagemember of the heel holder comprises a'bar '72 pivotally mounted on a slide plate 74.having at one .sidea hub"? 5 from which extends a rod 76. The rod 76 is disposed transversely of the die plate section and provided at its opposite end with a nut 77 against which bearsa compression spring 78,-as shown inFig. 8 tending normally to move the rod inwardly and-press the gage bar 72against the heel breast. The rod 76 passesthrougha threaded opening in a lug on the lower sideof the slide 62. An adjusting nut 79-is threaded into the open ing by the movement of which the pressure of the gage=bar may be adjusted without affecting the position, of the baritself.

in order to ipermit the adjustment ofthe gagebar'TQ for right and left heels the gagebar'is provided with a triangular recess 80 at oneside of its axis into which projects a pinSl on a slide bar 82 which is arranged for movement toward and from the axls of. the gagebar. Anad ustmg screw 64 is threaded in a lug projecting downwardly from the slide plate 74 and provided with a collar which tits loosely in a slot in the under side of'the slide bar 82. When the pin'8l is movedinto its extreme outerposition it is disposed in the apex of the triangular recess 80 in which position it is shown in position to anchor the breast bar 72 while in Fig. 7 the pin 81 is shown in position to permit the maximum swinging movement of the bar.

A gage bar 86 for the topliit holder is provided which is similar in its details to the breast bar72 of the heel holder above de scribed.

The slide 62 is connected at its inner end to a rod 90 having rack teeth out in its end portion and being encircled by a compres sion spring 92 tending normally to move the slide or. outwardly so as to position the topli'l t holder beneath the nail block. A pinion 941 on the lower end of a short vertical shaft 96 meshes with the rack 90. The shaft 96 at its upper end is provided with a second pinion 98 arranged to be engaged and rotated by a segmental rack 99 secured to a tationary bracket 5d secured to the upper end of the bearing member 50. The direction of movement of the die plate section 16 is clockwise and in such movement the pinion 94: is turned in the direction to move the slide 62 toward the right as seen in Fig. 3 compressing the spring 92 and bringing the heel holder beneath the nail block 52 which, at the termination of this movement, occupies the position of the nail block 53, as shown in Fig. 9. The slide 62 is provided in its upper surface with a recess for the looking pin 100 which is arranged to be automatically released by a downward movement of: the cross head in the heel attaching operation. For this purpose an adjustable trip rod. 103, shown in Fig. 1, is mounted at the rear side of the cross head and arranged to engage the trip lever 102 as above indicated. It will be understood that the 10010 ing pin holds the slide 62 with the spring 92 under compression and that the action oi? this spring is ellective to shift the heel and toplii'tt holders. The rod 90 carries at one end an adjustable step 104 which engages a normally stationary but yielding stop 1116 on the plate 60 when the slide 62 tripped, thus determining the position of the slide when the top lift holder is to occupy its proper position beneath the nail block. It will be understood that similar mechanism is provided at each end of the die plate section 16 so that whenever either nail block occupies its outermost position, as does the nail block 53 in Fig. 2, the heel holder will be positioned in readiness to receive a heel blank.

The stationary tubes 38 have also the function of guideways for the ack carriage 110 which is provided with semicylindrical slides 112 shaped to fit the inner surfaces of the tubes 38. The jack carriage includes a transverse shaft 11.3 upon which is pivotally mounted a bracketlld which carries the jack parts. The jack heel post 116 projects upwardly from the bracket 114. This will not be herein specifically described as it is fully disclosed in United States Patent No. 1,;-". 3,$. \l}, granted Aug. 26, 1919, on an application tiled by me. is piv tally mounted in the bracket 114: and provided with a slotted arm 120 through which passes a pin 121 in the bracket. The pin and and slot connection. hm'rnitg li it d swinging movement from front to rear of the toe post 118 while the thumb nut 122 is pro vidcd for clamping the toe post in the desired position.

The toe post 11.8 is provided with a hinged jfilgll; at its lower end, as shown in Figs. 1 anu 2, permitting the post to swing for a right and left adjustment. Above the hinge the post is threaded and provided with an adjustable collar 128. l Vhen the collar is screwed down tightly against the lower part of the hinge the post.118 is held in a central position.

is the collar 123 is adjusted upwardly upon the post an equal swinging movement to the right or left is permitted.

llhe jack carriage 1.10 is moved vertically with the shoe first to i'neasure the work and then to apply pressure thereto. The mechanism :tor eil'ecting the measuring operation will now be described. 1%. swinging cam piece 124-. mounted for movement about the tranawerse shaft of the jack carriage and provided at its lower surface with a lmrdened cam 126. Normally the cam 12$ s upon a roller 128 extending across be t son the inner ends of a forked lever 13 lly mounted on a bracket 132 Jolt:

'une part 14%. The cam piece 12 is with a rearwardly extendi g arm L vi hich are connected the upper on s oi a pair of rods 156 extending downwardly to the trcadle levers 152. The rods 150 are bent as shown in Fig. 2 and provided with a spreader 15% against the under surface of wl 'ch bear the compression sprin 156 which to hold the treadie lovers in elevated position and also to mainta in the cam piece 12s: in its initial position as shown in Fig. 1. VJhcn the treadle le crs are depressed the operator the cam piece 12% is rotated in a counter-clockwise direction and the jack carriage is moved until this movement is arrested by engagement with the desired degree oi? measuring pressure of the shoe and heel to be attached. The jack carriage is given its further upward movement to apply ressure to the work by mechanism which will now be described. A bell crank pressure lever 136 is journaled in the be seen that when the shaft 16 is turned to The toe post 118.

lower the rear end of the presser lever 13G theack carriage will be-given a further upward movement Qfpredetermined amount, this movement occurring independently of and in addition-to the upward movement which has taken place in the measuring 0poration.

roller 128. For this purpose'the outerend of the forked'leveic liio is connected to stationary pin 131 on the bracket 132 by means of a threadedexpansible connection and anfadjusting wheel 129 is provided for regulating the length of this connection. Thus, when it is desired to reduce the amount of the final pressure movement, the adjusting wheel 129 is turnedin a direction to elevate the pin 128 and the jack carriage supported thereby; The effect of this adjustment is that'the initial movement of the presser lever 136 becomes lost motion and theack carriage is elevated only during the latter part of this movement. 1111 the other hand, by lowering the pin 128 the full movement ofthe presser lever 136 is made effec tive and the pressure applying movement of the jack carriage is correspondingly increased.

It is important that the nail block 52, or 53 should be accurately located in operative position before starting the machine as otherwise the drivers would not properly enter the driver passages in the nail block. To this end the die plate section is provided in its lower surface with. a pair of recesses adapted to receive the upper end of a vertical rod 166 connected at its lower end to theforwardly extending arm of a bell crank lever 162 journaled in the machine frame. The upwardly extending arm of the lever 162 is arranged to stand beneath a projection on the cam piece 124 whenever the rod 160 is depressed as it is unless seated in one of the two recesses in the die section 46. Under these circumstances the cam piece 12 1 is locked against movement and the operator is unable to-effect the measuring operation until the die section has been moved into its proper operative position.

Each of the locking recesses is provided with an inclined approaching surface so that when the die section 46 is rotated the 'endof the rod 160 will be forced downwardly, swinging the upper end of the lever 162 forwardly. It will be apparent that this cannot occur as long as the projection on the the clamp.

It will benoted'that the jack is arrangedto swing forwardly to receive-thcshoe and then rearwardlylnto operative position beneath the nail block. li lechanism' forlocatirig and clamping .the counter portion of the shoe in the proper position beneath the nail lock is-shownin Fig. 10. A flexible counter clamp 170 is connected at either side through a link 172 to the inner end of a threaded rod 17% upon which is journaled a threaded sprocket wheel 176. The rod 174 slides longitudinally inbearing's formed in" a piece 177 bolted to the forwardly extendin arms of. a yoke-shaped bracket 178. The outer s rfaces of the pieces 177 are planed and arran'ged'to-slide upon corresponding surfaces formed in the machine frame. 13y turning the sprocket wheels 176 in the proper direction the opening'of the counter clamp 170. may be increased or reduced. Means are provided for independently or jointly effecting adjustment of the sidesof To this end a pair of alined shafts 180 and 182 are journaled in the rear part of the bracket 178 and are each provided with a sprocket wheel 181 over which runs a chain connecting the shafts 180, 182 withthe sprocket wheels 176. The shafts 180,182

are normally connected bya toothed clutch 18 1. The shaft. 180 is movable longitudinally and, normally held in position to engage the band clamp. If it is desired to effect an individual adjustment the shaft 180 is moved toward the right, as seen in Fig. 10, and may be turned while so held to adjust the right side ofthe clamp while at'the same time the shaft 182 is freed so that the left side of the clamp may be adjusted.

Theibraeket 178-is supported by a carriage 190 arranged forvertical movement in the machine frame with the jack carriage 110 and also for independent vertical adjusting movement; The jack'carriageis pro vided with a rearwardly extending plate 192 having a threaded hub in which is mounted a right and leftscrew 19 1 having a hand wheel 196. At its upper end the screw 191- enters the threaded hub of the carriage-190 and it will be seen tha' rotation of the wheel 1% adjusts the carriage vertically with respect to the plate 192 of the jack carriage. The bracket 178 is also arranged for horizontal adjusting movement upon the carriage 190. To this end the carriage is provided with a horizontal guiding surface for the bracket 178 and with a pair ofvertical boltswhich extend through parallel slots in the bracket. A threaded adjustingrod 198 projects from the rear side of the bracket through a lug on the carriage 1.90 and an adjusting wheel 199 is provided for turning the rod to shift the bracket forwardly or rearwardly.

The band clamp 170 is ar 'anged for angular adjusting movement about the axis of the pins 174 and to this end is provided with a rearwardly extending rod 200 which pro jects into a curved slide piece 202. The slide piece is arranged. for movement in curved dovetailed ways 203 formed in a portion of the bracket 1'78, as shown in Figs. 10 and 11.

The treadle mechanism comprises a pair of treadle levers 152 pivoted at the rear portion of the frame 12, and connected by a cross rod 209 upon which are ournaled a pair of yoke-shaped frames 211. The ends of the rods 150 pass into the yokes 211 to which they are connected through springs .213. This construction permits depression of the treadle levers 152 after the downward movement of the rods 150 has been arrested at the completion of the measuring operation. This lost motion may or may not be required in order to trip the main clutch, as will presently appear. .l lach treadle lever 152 carries a pivoted arm 216 between the forward ends of which extends the treadlc plate 210. A spring 215, shown in Fig. 1, holds the treadle plate 210 in one of two positions; 'viz., an operative position, as shown in full lines in Fig. l where the inner ends of the arms engage lugs upon the treadle levers 152, or in an inoperative position in which the arms 216 extend vertically into engage ment with the base of the frame. The arms are moved into the latter position by theoperator when he desires to lock the 'trea-dle against depression.

The clutch is tripped by swinging torwardly the arm 222 pivotally mounted. upon the base of the frame and having a forwardly extending arm 220. For this purpose each treadle rod is provided with a hinged trip piece 2l8-having a downwardly extending arm arranged to encounter, the

' horizontal arm 22l) and depress the latter when the treadle is operated. Continued dowmvard movement oi the treadle carries thearm of the tripping piece 218 out of engagement with the arm 220 and prevents the clutch from being again trip ed until the treadle levers have been permitted to reassume their normal elevated position. The treadle plate 210 is provided with an aperture through which extends the end of an auxiliary treadle 212 which is connected to a stop member 214:. Normally the operator will disregard the auxiliary treadle 212 but in case it should he desired to depress the treadle suiliciently to measure the work, and at the same time insure that the main clutch shall not be tripped, the operator will depress the treadle plate 210 at the point where the auxiliary treadle 212 appears.

Under these circumstances the stop 214: will he swungdownwardly and will encounter the base oi: the "frame and so arrest the treadle levers 152, preventing the latter from being moved sui'liciently to trip the clutch.

Tlhe operation of the machine will be apparent from the foregoing description but may be briefly outlined as follows: With the machine in the condition shown in Figs. 1 and 2, the operator will pull the jack forwardly to place upon it a shoe to be heeled while at the same time nails will be supplied to the outermost nail block and the heel blank and toplitt will be inserted in the respective holders. The die section 46 is then rotated, carrying the loaded die block into position beneath the drivers with the heel blank in operative position. The jack is then pushed rearwardly and the counter portion of the shoe accurately locatedby the band clamp 170. The operator now depresses the treadle plate 210 first swinging the cam piece 12s to effect the measuring operation and then tripping the main clutch whereupon the final upward movement is imparted to the jack carriage and the cross head is moved downwardly to drive the attaching nails. In the downward movement of the cross head the heel and toplitt holder is tripped and during the upward movement 01": the cross head the holder is moved from right to left to properly position the toplitt. The operations above described. are now substantially repeated in order to spank the toplitt upon the attached heel and subsequently the die plate section l6 is given a half revolution to bring the machine parts into initial position in readiness for a new cycle.

Having thus described my invention, 1 c aim as new and desire to secure by Letters Patent of the United States:

1. A machine for attaching heels, having, in combination, a nailing die movable between nail loading and heel attaching positions, heel and top lift holders associated with the die and constructed and arranged to position alternatively a heel or a top lift in register with the die, and means tor automatically moving said holders alternately into register with the die in aroper time relation to the movements of the latter.

2. machine tor operatingen heels having, in combination, circularly movable nailing die, a reciprocating of: tools. heel and top lift holders movable radially of the die, andmeans controlled by the reciprocation of the tools for efi ecting radial movement of said holders to substitute one for the other.

3. A machine for operating on heels, having, in combination, a frame having a die plate and shoe support relatively movable to subject the work to pressure, a tubular tensionmember connected to eitherend of the die plate, operating rods arranged to reciprocate within the tubular members, and

a gang of tools carriedthereby. 4. A machine tor operating on heels, having, in combination, a "frame includlng parallel tubular tension members, reciprocatory side rods of greater, length than the tubular members arranged to reciprocate therein and connected at their'ends by cross heads,

and a gangof tools carried by one of the cross heads. V

-5. A machine for operating on heels, havin in combination, a frame having a die plate, a thrust receiving part spaced from the the plate, a shoe-support, mechanism re-actmg against the thrust receiving part for moving the shoeisupport toward the die plate, tubular tension members connecting the the plate and said thrust receiving part,

and nailing mechanism including side rods arranged toreciprocatr in the tubular members. V

6. A machine for operating on heels, have ing, in combination, a frame part provided with bearings for a shaft having operating cranks, and, a second frame part detachably seiured to the first and carrying nailing mechanism and relatively movable members for applying pressure to the work, together T with operating trains of mechanism between the operating cranks on the one hand and the nailing mechanism andone of the pressure applyingmembers on the other hand.

7. A machine for operating on heels, having, in combination, a frame having apair of parallel tubes, a jack carriage disposedbetween the tubesand shaped to'be guided thereby, operating rods arranged to reciprocate in the tubes, and a gang of tools op erated thereby.

8. A machine for attaching heels, having, incombination, a pair ot die blocks, asupportingmember for the die blocks rotatable to present them successively 1n nall loadlng and heel'attaching positions, a gang of tools,

and. stationary means for supporting at'its' outer side each die block brought into l ne with the tools. Y

9; A machine for operating on heels, having, in combination, 7 oppositely disposed thrust receiving members connected by ten sion members, and means for subjecting a heel and shoe to pressure betweenthe thrustreceiving members, one or? said members in cludlng a stationary section and an nterlocking pivotally mounted section having a: plurality of die blocks movable alternately into thrust receiving position.

10. A machine for oeeratin on heels having, in combination, a frame having a 'movable jack, and an-..oppositely disposed i' abutment comprising a grooved stationary member, and a rotatable carrierhaving a plurality 0t separable die blocks tonguedito fit thegroove inthe stationary member.

11. A machine for operating on heels,

' having,-in combination, a frame having a movable ack, an oppositely disposed abut 'ment lncludlng a the carrier rotatable indealinement with: the jack, and means for movingthe ack to measure the work and simultaneously lock the movable die block 111 position.

139A machine for operating on heels,

having, in combination, a vertically moiv able jack, an abutmentincluding a horizontally movable CllQ block, means formoving the jacktomeasurethe work, and vloclring mechanism constructed and arranged to prevent operation of said means when the die block is not properly positioned andto lock the die block in position when the aclr 1s moved. i i

14. A machine for attachingheels, having, in combination, pivotally-mounted carrier, having a pair of die blocks arranged to be'presentedalternately in nail loading and attaching positions, and heel and top lift holders associated with each die block.

15. A machine for operating on heels, having, in combination, a carriermounted for pivotal movement,idie blocks 52 and 53 on the carrier, a heelholder and a top litt holder associated with each die-block, and means for moving-the holdersv alternately into operative position with relation eachto its associated die block in proper time relation tofthe' movements of the latter.

16. A machine for operating on heels, having, in combination, a carrier mounted for turning movement,- a die block mounted at each of the outer ends of the carrier, heel and top'lift holders associated with each die block and movable iradially with respect to the carrier, andmeans controlled by movement of the carrier forv effecting such radial movement. 7 a I 17. A mach ne for operating. on heels,

having, in combination, a pair '01? die blocks mounted for turning movement about an intermediate axls, heel and top lift holders associated with each dieblock, and means for automatically positioning one of said holders 1n operative relation toits associated die block when (the latter is'swung.

into inoperative position in the machine.

18. A machine for. operating, on heels,

.having, in combination, a pair of. dieiblocks mounted for turning movement about a cominon axis, heel and top liitt holders arranged. to be locked with one holder initially in operative position; means for locking the holders in said position, and separate means for substituting one holder for the other.

ll). A machine for operating on heels, having, in combination, a die block mounted for turning movement about an external axis, heel and top lift holders associated therewith, and means for bringing the heel holder automatically into operative relation to the die block by the turning movement of the latter out of its operative position in the machine.

20. A machine for operating on heels, having, in combination, a die block mounted for turning movement about an external axis, a blank holder associated with the die block, and mechanism for moving the blank holder relatively to the die block when the die block is turned, said mechanism being constructed and arranged to release the holder after having moved it to a predetermined point.

2i. A machine for operating on heels, having, in combination, a die block mounted to more at iut an external axis, a blank holder isociated with the die block, spring operated actuating mechanism for moving the holder relatively to the die block arranged to be energized when the die block is turned, and means for automatically rendering operative said mechanism when the blank has been operated upon.

22. A machine for operating on heels, having, in combination, a pivotally mounted carrier having a die block at either end, a heel and top lift holder associated with each die block, and means for moving each holder radially in one direction while the carrier remains at rest and in the opposite direction when the carrier is turned about its pivot.

23. A machine for operating on heels, hav ing, in combination, a pivotally mounted carrier having a die block mounted therein, a blank holder slidable upon the carrier, rack and pinion mechanism for moving the holder in one direction when the carrier is turned arranged to become disengaged when the holder has been so moved, a latch for maintaining the holder in position, and

yielding means for moving the holder when the latch is released.

2%. A. machine for operating on heels, having, in combination, a carrier having a die block, a segmental gear disposed adjacent thereto, a blank holder slidable on the carrier, and operating mechanism including a pinion arranged to cooperate with the segmental gear, said carrier and gear being relatively movable to shift the position of the holder relatively to the carrier.

25. A machine for operating on heels, having, in combination, shoe supporting means, and a blank holder including a pivoted breast bar having a triangular recess, and a stop pin adjustable toward and from the apex of said recess.

26. A machine for operating on heels, having, in combination, a ack and die plate arranged itor relative movement, a starting treadle constructed and arranged for moving one of said elements to measure the work, and an auxiliary treadle for limiting the movement of the starting treadle.

2-7. fr machine for operating on heels, having, in combination, work pressing and nail driving mechanism, a starting treadle arranged to control the work pressing mechanism and having a foot plate extending across the front of the machine with an aperture therein, and an auxiliary treadle disposed within the aperture for limiting the movement of the starting treadle.

In testimony whereof: l have signed my name to this specification.

JOSEPH H. POPE. 

